Re: [PATCH 9/9] media: atomisp: Implement link_setup op for ISP subdev MC entity

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Hi,

On 2/17/24 19:52, Andy Shevchenko wrote:
> On Sat, Feb 17, 2024 at 1:25 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
>>
>> The atomisp driver's Android heritage makes it weird in that
>> even though it uses MC + subdev-s it is designed to primarily
>> be controlled through its /dev/video# node.
>>
>> It implements s_input on /dev/video# to select which sensor to use,
>> while ignoring setup_link calls to enable a link to another sensor.
>>
>> Add support for selecting the active sensor the MC way by adding
>> setup_link support.
> 
> ->link_setup()
> 
>> The implementation is a bit convoluted due to the atomisp driver's
>> heritage.
> 
> ...
> 
>>  #include "atomisp_common.h"
>>  #include "atomisp_compat.h"
>>  #include "atomisp_fops.h"
>> +#include "atomisp_ioctl.h"
>>  #include "atomisp_internal.h"
> 
> Hmm... Perhaps keep it ordered?

Yeah my bad, I intended to keep it ordered but I somehow got it wrong.
this and the commit msg remark are both fixed in my personal tree now.

> 
> ...
> 
>> +       mutex_lock(&isp->mutex);
> 
> Side note: Are you planning to use cleanup.h at some point?

Maybe. I have no objections against. For functions needing
e.g. heap memory only locally it certainly makes sense.

Regards,

Hans



> 
>> +       ret = atomisp_pipe_check(&asd->video_out, true);
>> +       if (ret == 0)
>> +               asd->input_curr = i;
>> +       mutex_unlock(&isp->mutex);
>> +
>> +       return ret;
> 
> 





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